package com.shanzhe.eshop.common.jdk;

import java.util.HashMap;

/**
 * @Author yinwei
 * @create 2021/10/1
 * @Version 1.0
 */
public class HashMapDemo {

    public static void main(String[] args) {
        HashMap<String, String> hashMap = new HashMap<String, String>(2);
        hashMap.put("张三","zhangsan");
    }
}
